If you mark a day booked, you are excluded from jobs asking for that day — not ranked lower on them. A customer who has told us they need someone on the 4th should not be shown a business that has already said it cannot come.
Ranked lower would be worse than removed
Appearing at position eight on a day you cannot work is not a smaller version of appearing at position one. It is the same wrong outcome with an extra step: the customer still calls, you still say no, and both of you have wasted the call. Being absent is the honest answer.
Blank days never count against you
The calendar has three states. Green is available, red is booked, and blank means you have not said. Blank never removes you from anything. That matters, because otherwise the only safe strategy would be to fill in every day forever, and nobody does that.
A day where you have marked one half booked and left the other blank is not treated as unavailable either. Half a day is still work you can take.
What keeping it current does earn you
A confidence figure that ranking reads, built from two things: how much of the coming period you have actually said something about, and how recently you said it. Both matter — a calendar filled in thoroughly six months ago tells a customer nothing about next Tuesday.
You cannot game it by clicking
Confidence counts distinct days you have made a statement about, never the number of changes you have made. Toggling the same day back and forth twenty times earns exactly what setting it once does. This is deliberate: the moment activity is rewarded instead of information, the score stops describing anything.
It also means the tradies who benefit are the ones actually keeping it up to date, which is the only reason to have the number at all.